Feasibility Flashcards
1
Q
If overall cell potential positive what does this mean for reaction
A
Means reaction is spontaneous and favourable
2
Q
What happens if concentration of solution increased on emf
A
Makes cell emf more positive as fewer electrons are produced in the reaction
3
Q
What happens if solution used at lower concen that 1moldm-3 for reduction
A
Less positive as equilibrium will move towards ion to increase its concentration meaning E ø value for cell less positive so emf value less value
4
Q
Process and colour change of reduction of vanadium
A
By zinc
V5+ (yellow), V4+ (blue), V3+ (green), V2+(purple)
5
Q
Why can even if reaction feasible it not happen
A
Due to kinetic inhibition/very large activation energy
